Uefa has opened disciplinary proceedings against Celtic following the incident during Wednesday's Champions League match in which a spectator confronted Milan's goalkeeper Dida.

The incident came in the immediate aftermath of Scott McDonald's last-minute winner in Celtic's 2-1 victory. The fan, who has since been identified and banned by the club for life, made contact with Dida who proceeded to briefly give chase before collapsing to the ground theatrically and being carried off on a stretcher.

The Scottish club will have to answer charges of "lack of organisation and improper conduct of supporters". Uefa's control and disciplinary body will deal with the case at their next disciplinary meeting on October 11. In addition, Uefa are seeking clarification from Milan on the reason for the substitution of Dida.

Uefa communications director William Gaillard said the decision to ask Milan to explain the substitution of Dida was prompted by the reports they received from the referee Markus Merk and Uefa's delegate Andreas Akkelides. "It is up to Milan to provide an explanation and it is probably something to do with what was in the referee and delegate's reports. But it is under investigation so I can't say much more about it."

Celtic fan Robert McHendry today pleaded guilty to a breach of the peace during Wednesday night's match.